I'm always up for finding improvements in the built binaries so long as
the adjustments to the compiler are reasonable. I don't have Delphi
10.4 Sydney or anything close to that version unfortunately, so I cannot
compare the disassembly of each binary produced, but I'll see what I can
do someday.
Gareth aka. Kit
On 12/07/2020 11:53, Jonas Maebe wrote:
On 2020-07-12 09:37, Samuel Herzog via fpc-devel wrote:
The results you can either verify yourself (by downloading sources or
executables)
or look at the attached screenshot.
"Composite score" ist the average of the 5 different "benchmarks".
I am a little irritated about the scores of "sparse matmult" and "LU".
While the results are certainly interesting, keep in mind that SciMark
(and LU in particular; I don't know about sparse matmult) is generally
not a very good benchmark in terms of being representative for real
world programs, especially as far as non-JIT compilers are concerned.
See e.g.
https://www.phoronix.com/forums/forum/software/programming-compilers/870805-gcc-6-1-vs-llvm-clang-3-9-compiler-performance?p=871540#post871540
(last post on the page) by Honza Hubička, a gcc compiler developer (*).
Of course, compiler developers still tend to focus on it because it is
used a lot to compare compiler performance and nobody likes to look
bad. And there are of course still optimisations that will improve
both those benchmarks and real world programs.
Jonas
(*) who has a very interesting blog on compiler optimisations, btw:
http://hubicka.blogspot.com
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